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Green DDR3 memory module with gold contacts and black chips

SK hynix

SK hynix HMT351R7EFR4A-H9 4Gb DDR3 1333MHz 1.35V 240Pin Registered ECC Switch Module

SKU CH-RJ6N-9P9R5

4Gb DDR3 registered ECC memory module running at 1333MHz and 1.35V in a 240-pin form factor

  • 4 Gb DDR3 capacity for network switch upgrades
  • 1333 MHz PC3-10600 speed rating for compatible throughput
  • 35 V low-voltage operation reduces power draw
  • 240-pin registered ECC design ensures data integrity

DDR3 1333MHz registered ECC module

This 4Gb DDR3 module runs at 1333MHz with a 1.35V supply and uses a 240-pin registered ECC design. It is built for networking switches and similar equipment that require error-correcting memory in a standard DIMM form factor. The single-rank 1Rx4 organisation keeps the electrical load low for stable operation in dense chassis.

Low-voltage operation and thermal profile

At 1.35V the module draws less power than standard 1.5V DDR3, reducing heat output inside a closed switch enclosure. Registered buffering adds minimal latency while improving signal integrity across the bus. The compact 5.1g weight and low profile allow airflow to pass freely, keeping temperatures down without active cooling on the memory itself.

How it compares

Measured against everything we stock in Switch Modules, Transceivers & Add-Ons, at today’s prices. Recalculated every night.

Price $21.99
Cheaper than about 85% of the 1,517 comparable items (median $68.99).

Specifications

Product
Brand nameHYNIX

Questions about this item

How is the 240-pin DDR3 registered ECC module seated in a switch slot, and which alignment step is often missed?

Align the single key notch on the 240-pin edge connector with the slot ridge, press vertically until both retention clips click, and verify the 1.35 V DDR3 module sits flush; the step often missed is checking both clips have fully engaged.

What maintenance or replacement will the 4Gb 1333MHz registered ECC memory need over its service life?

The module itself requires no scheduled maintenance; replacement is only necessary if ECC error counters report uncorrectable faults or if a capacity upgrade to a higher-density DDR3 part is required.

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